Machine Learning-Based Prediction of Korean Triage and Acuity Scale Level in Emergency Department Patients
10.4258/hir.2019.25.4.305
- Author:
Sae Won CHOI
1
;
Taehoon KO
;
Ki Jeong HONG
;
Kyung Hwan KIM
Author Information
1. Office of Hospital Information, Seoul National University Hospital, Seoul, Korea. kkh726@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Triage;
Hospital Emergency Service;
Machine Learning;
Natural Language Processing
- MeSH:
Cross-Sectional Studies;
Dataset;
Emergencies;
Emergency Service, Hospital;
Forests;
Humans;
Logistic Models;
Machine Learning;
Natural Language Processing;
ROC Curve;
Triage
- From:Healthcare Informatics Research
2019;25(4):305-312
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: Triage is a process to accurately assess and classify symptoms to identify and provide rapid treatment to patients. The Korean Triage and Acuity Scale (KTAS) is used as a triage instrument in all emergency centers. The aim of this study was to train and compare machine learning models to predict KTAS levels. METHODS: This was a cross-sectional study using data from a single emergency department of a tertiary university hospital. Information collected during triage was used in the analysis. Logistic regression, random forest, and XGBoost were used to predict the KTAS level. RESULTS: The models with the highest area under the receiver operating characteristic curve (AUROC) were the random forest and XGBoost models trained on the entire dataset (AUROC = 0.922, 95% confidence interval 0.917–0.925 and AUROC = 0.922, 95% confidence interval 0.918–0.925, respectively). The AUROC of the models trained on the clinical data was higher than that of models trained on text data only, but the models trained on all variables had the highest AUROC among similar machine learning models. CONCLUSIONS: Machine learning can robustly predict the KTAS level at triage, which may have many possibilities for use, and the addition of text data improves the predictive performance compared to that achieved by using structured data alone.
